This site is provided for the benefit of funders of the EPRI Power Quality Knowledge (PQK) supplemental project. For those seeking to learn more about EPRI PQ Knowledge, please contact me, Bill Howe, Program Manager of Power Quality research for EPRI.
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Call of the Month for March 2026 As concerns about electrical network safety increase—due in no small part to heightened awareness from wildfires and other incidents—a PQ Knowledge funder inquired with the EPRI PQ team about improved techniques for detecting energized objects that could pose a shock hazard. In particular, the PQK funder was curious about which conditions can affect the accuracy of measurements and energized object detection.
Most Popular PQ Documents (Based on Clicks)
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EPRI Industrial PQ Training Videos
As a follow-up to our Industrial Power Quality training classes, we have posted these complementary training videos to help solidify the concepts for both utility members and their customers. The top three are listed here.
Visualizing PQ Drive Parameters for Improved Voltage Sag Ride-Through 
This video demonstrates the voltage sag susceptibility of AC drive systems and how to improve the drive’s robustness through parameter changes.
Understanding PLC Voltage Sag Ride-through: AC and DC Powered Systems 
This video demonstrates the differences in voltage sag ride-through between an AC powered PLC system and a DC Powered PLC system.
Power Conditioning to Enhance Control System Voltage Sag Ride-Through: The Constant-Voltage Transformer 
This video shows how a CVT can be utilized to harden the voltage sag response of an automated control system.

